themes missing building the rpm package

[Daniele Branchini]

Following the doc, I built the rpm package:

python3 setup.py bdist_rpm \
   --requires="python3-inotify python3-markdown python3-docutils python3-jinja2 python3-pytz python3-dateutil python3-pyyaml python3-pillow"

and then installed it and followed the "A new blog in under one minute" tutorial, launching ssite show and obtaining this error:

$ ssite show
Traceback (most recent call last):
  File "/usr/bin/ssite", line 35, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/bin/ssite", line 29, in main
    return handler.run()
           ^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/staticsite/cmd/serve/__init__.py", line 58, in run
    self.start_server()
  File "/usr/lib/python3.11/site-packages/staticsite/cmd/serve/__init__.py", line 41, in start_server
    app.reload()
  File "/usr/lib/python3.11/site-packages/staticsite/cmd/serve/server.py", line 176, in reload
    self.site.load()
  File "/usr/lib/python3.11/site-packages/staticsite/site.py", line 489, in load
    self.load_theme()
  File "/usr/lib/python3.11/site-packages/staticsite/site.py", line 367, in load_theme
    self._theme = Theme.create(self, self.settings.THEME)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/staticsite/theme.py", line 238, in create
    return cls(site, name, loader.load(name))
                           ^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/staticsite/theme.py", line 51, in load
    self.load_configs(name)
  File "/usr/lib/python3.11/site-packages/staticsite/theme.py", line 80, in load_configs
    config = self.load_config(self.find_root(name), name)
                              ^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/staticsite/theme.py", line 97, in find_root
    raise ThemeNotFoundError(f"Theme {name!r} not found in {self.search_paths!r}")
staticsite.theme.ThemeNotFoundError: Theme 'default' not found in ['/usr/bin/themes', '/usr/share/staticsite/themes']

In the rpm package seems to be missing the "themes" directory.

If I launch the same command from the git checkout with:

./ssite show $my_site_path

everything seems to work fine.